How does the heart beat out its regular rhythm for decades? How do our eyes process the light and color before them? Ion channels control or regulate diverse physiological activities in our body.

and touch receptor cells — all of them use ion channel receptors to convert chemical or mechanical messages into electrical signals. Like all cells, an excitable cell maintains a different ...

Water levels and mineral ions in the blood are controlled ... On the other hand, if the water concentration is too low outside compared to the inside of the cells, water will leave by osmosis ...